diff -urN srcold/ng_iface.h src/ng_iface.h
--- srcold/ng_iface.h	1970-01-01 01:00:00.000000000 +0100
+++ src/ng_iface.h	2008-06-22 01:58:10.000000000 +0200
@@ -0,0 +1,76 @@
+/*
+ * ng_iface.h
+ */
+
+/*-
+ * Copyright (c) 1996-1999 Whistle Communications, Inc.
+ * All rights reserved.
+ * 
+ * Subject to the following obligations and disclaimer of warranty, use and
+ * redistribution of this software, in source or object code forms, with or
+ * without modifications are expressly permitted by Whistle Communications;
+ * provided, however, that:
+ * 1. Any and all reproductions of the source or object code must include the
+ *    copyright notice above and the following disclaimer of warranties; and
+ * 2. No rights are granted, in any manner or form, to use Whistle
+ *    Communications, Inc. trademarks, including the mark "WHISTLE
+ *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
+ *    such appears in the above copyright notice or in the software.
+ * 
+ * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
+ * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
+ * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
+ * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+ * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
+ * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
+ * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
+ * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
+ * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
+ * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * Author: Archie Cobbs <archie@freebsd.org>
+ *
+ * $FreeBSD: src/sys/netgraph/ng_iface.h,v 1.9 2005/02/13 16:36:41 archie Exp $
+ * $Whistle: ng_iface.h,v 1.5 1999/01/20 00:22:13 archie Exp $
+ */
+
+#ifndef _NETGRAPH_NG_IFACE_H_
+#define _NETGRAPH_NG_IFACE_H_
+
+/* Node type name and magic cookie */
+#define NG_IFACE_NODE_TYPE		"iface"
+#define NGM_IFACE_COOKIE		1108312559
+
+/* Interface base name */
+#define NG_IFACE_IFACE_NAME		"ng"
+
+/* My hook names */
+#define NG_IFACE_HOOK_INET		"inet"
+#define NG_IFACE_HOOK_INET6		"inet6"
+#define NG_IFACE_HOOK_ATALK		"atalk"	/* AppleTalk phase 2 */
+#define NG_IFACE_HOOK_IPX		"ipx"
+#define NG_IFACE_HOOK_ATM		"atm"
+#define NG_IFACE_HOOK_NATM		"natm"
+
+/* MTU bounds */
+#define NG_IFACE_MTU_MIN		72
+#define NG_IFACE_MTU_MAX		65535
+#define NG_IFACE_MTU_DEFAULT		1500
+
+/* Netgraph commands */
+enum {
+	NGM_IFACE_GET_IFNAME = 1,
+	NGM_IFACE_POINT2POINT,
+	NGM_IFACE_BROADCAST,
+	NGM_IFACE_GET_IFINDEX,
+	NGM_IFACE_SET_IFNAME,
+};
+
+#endif /* _NETGRAPH_NG_IFACE_H_ */
